Blade sharpener



April 11, 1933. A, M, WHEELER BLADE SHARPENER Filed June 2, 1932 IN VENTOR. HL 5f-Kr f7, W/ffn Efe.

ZM hwwc VZ# Patented Apr. 11, 1933 UN ET STATES ALBERT M. WHEELER, F CATLETTSBURG, KENTGKY BLADE SHARPENER Application filed .Tune 2, 1932.

This invention relates to a blade sharpener. The chief obj ect of this invention is to form a blade Sharpener with but relatively few parts and these of relatively rigid construction and associated together so that the parts may be adjusted for presenting new sharpening surfaces if and when required.

The chief feature of the invention consists in yieldingly associating a steel block with a m steel ball, the same having tangential contact and between which is received the edge of the blade to be sharpened.

The full nature of the invention will be un 1 derstood from the accompanying drawing 5 and the following description and claims In the drawing, Fig. 1 is a perspective view of the device with the cover in closed position. r Fig. 2 is a longitudinal sectional View "9 through the device.

Fig. 3 is a transverse sectional view taken on line 5 5 of Fig. 2 and in the direction of the arrows and of the block support.

Fig. 4 is a. transverse sectional view taken on the same line in the direction of the are rows and marked 4 4 in Fig. 2, and of the ball support.

In the drawing, indicates a cover and n 11 a rectangular metal base having an in- "9 wardly directed upper end 12 that is nested within the cover 10 and the two are frictionally associated together. The base 11 is offset as at 13 to provide clearance for the heads 14 of rivets 15 which extend through the base 11 and through a strip of flat spring brass 16. One end of the Hat brass spring extends upwardly as at 17 and thence extends upwardly and inwardly as at 18. It is apertured as at 19 to receive an anchoring screw bolt 20 that has a threaded connection with a steel block 21 having a flat face 22 and the upper inclined bevel edge 23.

The opposite end of the iat spring 16 is ex- 4, tended upwardly as at 24 and the upwardly D extending end thereof is apertured as at to seat a steel ball 26.

The spring mountings insurefrictional contact between the flat face 22 and the steel ball,

,. and said contact is of tangential character. o The beveled portion 23 forms with the surface Serial No. 614,928.

of the ball a throat to receive the edge of the bladeto be sharpened. The portions 17 ,18 and 24 being of spring character', normally tend to force the ball and the block into engage- 5 ment and oppose its engagement.

Whenever it is desired to present a new surface for sharpening, the screw bolt 20 is removed, the ball 26 shifted to present a new tangential portion and then the block 21 resecured in position. Forming the two supports 17 and 24 of a single piece by uniting the same through the portion 16 insures a double anchorage to the base and thus prevents lateral twisting of the supports which might occur if each support 17 and 24 were independently anchored to the base by a single rivet.

If desired, the detachable connection between the portion 18 and the block 21 may be of an adjustable character whenever such type of connection appears desirable.

The invention claimed is:

1. A Sharpener including in combination a steel block having a :Hat face, a steel ball tangentially contacting the face, and means for causing yielding engagement therebetween.

2. In a Sharpener, a base, a cover therefor, a steel block supported by the base and a steel ball supported by the base and having a flat face tangentially contacted by the block.

3. In a Sharpener, a base, a yielding support, a steel block carried thereby and having a flat face, and a steel ball supported by the base and tangentially contacting the block flat face.

4. In a Sharpener, a base, a yielding support, a steel ball carried thereby, and a steel block supported by the base and having a flat face tangentially contacting the ball.

5. In a Sharpener, a base, a yielding support, a steel ball carried thereby, another yielding support, and a steel block carried thereby and tangentially contacting the ball.

6. In a Sharpener, a base, a steel block having a at face and an inclined face adjacent thereto, a steel ball tangentially engaging the flat face, and means for securing yielding tangential engagement, the inclined face and ball curvature forming a blade receiving throat therebetween.

7 In a Sharpener, a base, an upstanding apertured spring support, a steel ball seatable 5 in the aperture, and a steel block supported by the base and having tangential engagement with the ball opposite from its seating.

In witness whereof, I have hereunto aixed my slgnature.

ALBERT M. WHEELER. 

